Move yet more from WmShell to Shell

ash/aura/wm_shell_aura.cc

Index: ash/aura/wm_shell_aura.cc
diff --git a/ash/aura/wm_shell_aura.cc b/ash/aura/wm_shell_aura.cc
index 0c495e82915096545c6d7fba59f52777ea69a473..351100142f1b6926bab2d5ac83cba80e5af43fde 100644
--- a/ash/aura/wm_shell_aura.cc
+++ b/ash/aura/wm_shell_aura.cc
@@ -291,15 +291,6 @@ WmShellAura::CreateAcceleratorController() {
       accelerator_controller_delegate_.get(), nullptr);
 }
 
-void WmShellAura::SessionStateChanged(session_manager::SessionState state) {
-  // Create the shelf if necessary.
-  WmShell::SessionStateChanged(state);
-
-  // Recreate the keyboard after initial login and after multiprofile login.
-  if (state == session_manager::SessionState::ACTIVE)
-    Shell::GetInstance()->CreateKeyboard();
-}
-
 void WmShellAura::OnDisplayConfigurationChanging() {
   for (auto& observer : display_observers_)
     observer.OnDisplayConfigurationChanging();